Alpha Technologies CXPS 48-1.8-M2, 48V Pos Gnd - Manual (Page 18)

Argus Technologies Ltd. 053-991-C0 Rev A WC
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2.2.3 Shunt
A 400A shunt is included, in the CXPS 48-1.8-M2 system, for system current measurement. The shunt is installed
in series with the batteries and the system controller automatically calculates load current.
2.2.4 Internal Alarm Card
The DCP03 includes a standard alarm card providing a common interface point to internal system I/O
connections, an LVD override switch, and LED indication of breaker trip.
The alarm card provides terminal block access to internal signals such as binary alarms for breaker trip & LVD
open, alarm relay for driving LVD, and analog inputs for current (shunt) and voltage measurements. The terminal
blocks provide a single point of access to these signals for connecting to an external system controller. Refer to
the customer connections (“–08”) drawing at the rear of this manual for details on terminal block assignments.
The LVD override switch provides the user with the ability to inhibit or override LVD contactor operation as a
safeguard during controller maintenance. A green LED signals when the LVD is in normal operation mode and a
yellow LED and controller alarm signals when the switch has been placed into the override position.
Figure 3–Internal alarm card
I/O customer connection points
LVD override switch
2.2.5 CXCM2 I/O Terminal Block
A CXCM2 I/O terminal block kit is installed in the UDC front door for front access to controller signals and
interfaces to the CXCM2 controller, on the rectifier shelf, via three DB-style cable connections (Figure 4).
The internal signals from the distribution center are wired to the CXCM2 I/O board direct from the internal alarm
board. The remaining relay outputs, digital inputs, and analog inputs are available on the board via terminal
blocks for customer connection of external signals. Refer to the customer connections (“–08”) drawing at the rear
of this manual for details on terminal block assignments.
Figure 4–Internal alarm card and CXCM2 I/O terminal block
DB-style cable
connections to
1.8kW shelf
CXCM2 I/O
terminal block
assembly